Implement -DTEST_DEVICE option to allow user control over the device that is used for ctest.  The default is the psc device (what was hard-wired in before), but other alternatives like the psttfc device can now conveniently be used for ctest.
Implement -DTEST_DEVICE option to allow user control over the device that is
used for ctest.  The default is the psc device (what was hard-wired in
before), but other alternatives like the psttfc device can now conveniently
be used for ctest.

svn path=/trunk/; revision=7312

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot